Safety gas-burner.



0. LOWY.

SAFETY GAS BURNER.

APPLIoATIoN FILED JAN.101912.

1,038,772, Patented Sept. 17, 1912.

gigi@ COLUMBIA PLANDGRAPH co., WASHINGTON. D. C.

OTTO LOWY, OF NEWARK, NEW JERSEY.

SAFETY GAS-BURNER.

Specification of Letters Patent.

Patented Sept. 17, 1912.

Application led January 10, 1912. Serial No. 670,409.

T0 all ech-0m t may concern:

Be it known that I, OTTO LowY, a citizen of the United States, residing at Newark,

in the co-untyof Essex and State of New Jersey, have invented certain new and useful Improvements in Safety Gas-Burners; and I do hereby declare the following to be a full, clear, and eXact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to figuresv of reference marked thereon, which form a part of this specication.

This invention relates to a safety gas cock and is particularly designed to provide a gas cock which does not permit theissue of gas through the burner even when the gas cock is turned on, but which whenmanipulated permits the passage of gas through said burner and acting while the gas passes through the `burner up to a certain pressure to permit said passage of gas. As soon, however, as the gas pressure goes below a certain point, a closing means in the burner is operated to prevent the passage of gas through the burner. The closing means is not opened by gas under pressure, but is held open after it is manipulated to its open position. A gas cock of this kind is to be used when coin-controlled meters are installed. In meters of this type cases have occurred where the meter has delivered the gas which was prepaid, but the precaution has not been taken to turn the cock olf. On the insertion of a new coin the issue of gas t-hrough an open burner has in some cases caused asphyxiation and also explosions on the lighting of a match in a room where such open gas cock is located.

The invention presented in this application shuts off the gas when the pressure goes down, even if the gas cock stays open, and on a renewal of the pressure the yclosing means does not open, but is only opened after it is manipulated, that is, handled by the person intending to light the gas.

The invention is illustrated in the accompanying drawing', in which- Figure 1 is a side View of a gas cock showing my improved burner. Fig. 2 is a vertical section of the burner in its normal position closing the gas off. Fig. 3 is a view similar to Fig. 2, but showing the burner arranged to permit the passage of gas through the burner. Fig. 4 is a section on line 4, 4', in Fig. 2. i

The burner is mounted on any usual gas pipe 10 and I show a gas cock 11 for controlling the admission of gas to the burner. The burner itself consists of a tube 12 which 1s open at both ends, one end being `an outlet end and receiving any usual forni of tip 13, t-he other open end, 14, being adapted to Vbe fastened to the gas pipe or gas cock. The tube is provided with a partition 15 which is substantially transverse and closes the tube; Side openings 16 are arranged on one side of the partition, and side openings 17 are arranged on the other side of the partition, the function of these side openings Vbeing described hereinafter. On the tube is adisk 18 onto which is screwed a casing 19, the disk and the casing forming a chamber 20 into which is arranged a diaphragm 21 having a flange 22. The flange 22 slides on the outside of the tube 12 and closes the side openings 16 and 17 when it is in its normal position shown in Fig. 2,` and the gas under pressure coming int-o the tube of the burner `presses against the flange 22,' but has no opportunity of having a raising tendency on the diaphragm, and the diaphragm with its flange shuts the side openings. The disk 18 is provided with perforations 23 through which pass studs 24, the studs projecting up within thecasing andhaving enlargements 25 which co-act with the walls of the perforations 23 to form valves to close the perforations 23 against the leakage of gas. To further guard. against leakage of gas, the studs are fastened to a thimble 26, the flange 27 of which ts around the outside of the casing 19.

When the gas is turned on from the cock it can not pass through the burner, since the burner is in the position shown in Fig. 2, the diaphragm and also the thimble andthe studs being held in position by gravity. When it is desired to have the gas issue from the burner, the thimble 26 is pushed upward and it carries its studs with it, the studs pushing the diaphragm up to the position shown in Fig. 3, this being possible on account of the venting of the chamber through the passages 28 which are only covered after the gas passes from the side openings 16 and 17 The diaphragm 21 has considerable area,` and the gas under pressure passing through the chamber, which acts as a bypass, holds the ldiaphragm in the position shown in Fig. 3,'but the thimble and its studs drop to the position shown in Fig, 3, giving the diaphragm opportunity to descend to the position shown in Fig. 2 when the gas pressure is reduced beyond a Vcertain point.

If the gas is shut .ofi either by the gasy cock or from the meter, by reason oi"y aV coin meter having delivered its prepaid supply, the diaphragm is nol longer sustained bythe pressure and it falls to the posit-ion shown iu Fig. 2. On the lreadmission ofgas under pressure the diaphragm is not raised by said gas, but remains inthe position shown inFig. 2 until it is 'manually operated.

Having thus described my invention, what I'claim is 1. A safety.V gas burner comprising a tube having an end opening for a tip, a partition closing the tube intermediate of its ends. the

' tube havin@ o eninfrs onbothV sides ofthe b i a Y partition, a chamber surrounding the tube and inclosing the side openings, the cham ber acting-as a by-pass for conducting gas from the side openings on one side off the partition to the side openings onthe other side of the partition, means for closing the side openings when said last-mentioned means is in its normal position, and operating means extending to the exterior ofthe chamber for manipulating theclosing means to cause saidclosing means to open the side openings, said Vclosing means being .held in its open position by the gas under pressure passing through the burner.

1 2. A safety gas burner comprising a tube Y Y open on both ends and'having side openings having its ends open and having a partition between its ends', thetube having side openings on both sides of the partition, a chamber inclosing the side openings, a diaphragm having a ange thereon, said iangeembracing theptube to close the side openings when the diaphragm is in its normal position, and

.means extending to the exterior of the chant ber for moving the diaphragm toits operyated position, the diaphragm being held in flange of the thimble embracing the outside of the casing, thechainber having openings in its bottom, andfstuds extending through said openings and engaging the diaphragm on its under side whereby when the thimble is' raised' the diaphragm is moved to its operated position to permit the isfsue of gas from the side openings, said gas acting to maintain the diaphragm in its operated position when the .thimble resumes its normal position, the studs and the walls of the perforations in the chamber havingV co-acting means for closing said openings, when the thimbleV is in its normal position, against the escape of gas.

5. A safety gas burner comprising a tubular burner, means for preventing the passage of gas through said burner, and means :tor manipulating said first-mentioned means to permit the passage of gas through said burner, said iirst mentioned means being held in its operated'position by gas under pressure passing through theburner, but notV be-` ing adapted to be moved from itsfnornial position by gas under pressure. i In testimony, that I claim the foregoing, I have hereunto set my hand this 6th vday of January, 1912.

l OTTO LOWY.

Witnesses:

i WML H. CMFIELD, M. A. JonNsoN.

Copies of this patent may be obtained for five cents each, by addressing thev Commissioner of Patents,

Washington, D. C.f 

